If you want, I can:
As Kyung-min descends into darkness, he becomes increasingly unhinged and starts to take matters into his own hands, using his power and resources to track down Min-woo and exact a gruesome revenge. But as the cat-and-mouse game between the two men intensifies, Kyung-min begins to lose his grip on reality, and the lines between good and evil become increasingly blurred. I Saw The Devil Tagalog Dubbed
Here is the crucial truth: